리눅스 7.x 이상 부터 hostname 변경시 hostnamectl 명령어로 hostname를 쉽게 변경 할 수 있습니다.

 

[root@localhost ~]# hostname

localhost.localdomain   --> 기본적으로 현재 사용 중인 이름 

[root@localhost ~]# 

 

[root@localhost]# hostnamectl set-hostname SLASM19C

[root@localhost]# hostname

slasm19c   --> 소문자로 변경 되었네요.

[root@localhost]# 

 

 

[root@localhost]# hostnamectl --help

hostnamectl [OPTIONS...] COMMAND ...

 

Query or change system hostname.

 

  -h --help              Show this help

     --version           Show package version

     --no-ask-password   Do not prompt for password

  -H --host=[USER@]HOST  Operate on remote host

  -M --machine=CONTAINER Operate on local container

     --transient         Only set transient hostname

     --static            Only set static hostname

     --pretty            Only set pretty hostname

 

Commands:

  status                 Show current hostname settings

  set-hostname NAME      Set system hostname

  set-icon-name NAME     Set icon name for host

  set-chassis NAME       Set chassis type for host

  set-deployment NAME    Set deployment environment for host

  set-location NAME      Set location for host

[root@localhost]# 

 

[root@localhost ~]# hostnamectl set-hostname SLASM19C --static

[root@localhost ~]# hostname

SLASM19C         --> 대문자로 변경

[root@localhost ~]#

 

[root@localhost ~]# reboot

 

 

[root@SLASM19C ~]# hostname

SLASM19C

[root@SLASM19C ~]# 

 

[root@SLASM19C etc]# more /etc/hostname

SLASM19C

[root@SLASM19C etc]# 

[root@SLASM19C etc]# hostnamectl set-hostname SLasm9c --static 

[root@SLASM19C etc]# hostname

SLasm9c     --> 대소문자 변경

[root@SLASM19C etc]#

 

[root@SLASM19C etc]# hostnamectl

   Static hostname: SLasm9c

         Icon name: computer-vm

           Chassis: vm

        Machine ID: 3f62be271cd1354d98aedb0211e7bffa

           Boot ID: fa751d2126f441a29c000abcef1ba4c3

    Virtualization: kvm

  Operating System: Red Hat Enterprise Linux Server 7.7 (Maipo)

       CPE OS Name: cpe:/o:redhat:enterprise_linux:7.7:GA:server

            Kernel: Linux 3.10.0-1062.el7.x86_64

      Architecture: x86-64

[root@SLASM19C etc]

 

 

[root@server-150 ~]# hostnamectl

   Static hostname: server-150

         Icon name: computer-vm

           Chassis: vm

        Machine ID: 36cc986e11e540708dbf81d00c454c56

           Boot ID: 81d0fc11950a4842b3693b9122cda935

    Virtualization: kvm

  Operating System: Red Hat Enterprise Linux Server 7.2 (Maipo)

       CPE OS Name: cpe:/o:redhat:enterprise_linux:7.2:GA:server

            Kernel: Linux 3.10.0-327.el7.x86_64

      Architecture: x86-64

[root@server-150 ~]#